Cable Restrained Bearing
Design Principle
Cable Restrained Bearings (CRBs) integrate a cable restraint module with conventional bearings to provide enhanced seismic resistance and displacement control during earthquakes. Under small seismic events, the bearing functions conventionally, ensuring load transfer and minor displacement management. In large seismic events, the shear bolts in the fixed bearing disengage, converting it into a movable bearing while activating the cable module. This design dissipates seismic energy, redistributes forces between the pier and superstructure, and prevents girder collapse, ensuring the structure’s safety and stability.
Suitable Applications
Quality&Features
IEC’s CRBs exemplify innovative engineering, combining conventional load-bearing capabilities with advanced seismic mitigation features. The dual seismic dampening mechanism efficiently transfers loads while dissipating energy during seismic events. The integrated cable system provides anti-girder drop protection by limiting relative displacement between the pier and girder. Manufactured with high-strength, corrosion-resistant materials, CRBs offer a durable and low-maintenance solution, ensuring a long service life. These bearings deliver cost-efficiency, achieving over 10% savings compared to traditional seismic bearings, while maintaining superior performance. IEC’s CRBs are rigorously tested and comply with international standards, demonstrating their reliability and adaptability in seismic applications.
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